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differenceBy

js
_.differenceBy(array, [values], [iteratee=_.identity])

此方法与 _.difference 类似,不同之处在于它接受 iteratee,调用 arrayvalues 中的每个元素生成比较标准。结果值的顺序和引用由第一个数组决定。迭代器使用一个参数调用:(value)。

¥This method is like _.difference except that it accepts iteratee which is invoked for each element of array and values to generate the criterion by which they're compared. The order and references of result values are determined by the first array. The iteratee is invoked with one argument: (value).

注意:与 _.pullAllBy 不同,此方法返回一个新数组。

¥Note: Unlike _.pullAllBy, this method returns a new array.

新增于

¥Since

4.0.0

参数

¥Arguments

  1. array (数组):要检查的数组。

    ¥array (Array): The array to inspect.

  2. [values] (...数组):要排除的值。

    ¥[values] (...Array): The values to exclude.

  3. [iteratee=_.identity] (函数):每个元素调用迭代器。

    ¥[iteratee=_.identity] (Function): The iteratee invoked per element.

返回

¥Returns

(数组):返回新的过滤值数组。

¥(Array): Returns the new array of filtered values.

示例

¥Example

js
_.differenceBy([2.1, 1.2], [2.3, 3.4], Math.floor);
// => [1.2]

// The `_.property` iteratee shorthand.
_.differenceBy([{ 'x': 2 }, { 'x': 1 }], [{ 'x': 1 }], 'x');
// => [{ 'x': 2 }]

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